The Instant Replay feature allows users to send (or resend) an email
from Proofpoint Essentials to their messaging server. This may be
useful in the following situations:
* The original email failed to be delivered (bounced/expired)
* The original e...

In short, this can be done using the 'Status' column in the Email Logs
section of the Proofpoint Essentials Interface.
Note: Silent users do not have permission to log into the interface,
hence cannot perform this action. Please contact your admin to
re...